[Numpy-discussion] SIGFPE handling in ufunc

David Cournapeau david@ar.media.kyoto-u.ac...
Mon Dec 7 03:02:47 CST 2009


Hi,

While investigating why np.array([0]) ** -1/-1 crashes, I wondered about
how signal handling is supposed to work in ufuncs when a SIGFPE is
raised. In particular, the following is puzzling:

import numpy as np
x = np.array([1, 2, 3, 4]) / 0
# x is now array([0, 0, 0, 0])

Note that no warning is raised - this seems to be a regression, since I
came across e.g. this ticket: http://projects.scipy.org/numpy/ticket/541.

cheers,

David




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